When collecting a blood culture, complete blood count (CBC), and prothrombin time (PT) from a central venous device (CVAD), how many syringes must be used?

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Three syringes are typically used when collecting blood culture, complete blood count, and prothrombin time from a central venous device. One syringe is used for each test to avoid contamination and ensure accurate results. Using just one or two syringes can increase the risk of contamination or inaccurate results. Using five syringes would be excessive and unnecessary.

When Collecting a Blood Culture, Complete Blood Count (CBC), and Prothrombin